v 1 1 -1
v -1 -1 -1
v -1 1 -1
v 1 -1 -1
v 1 -1 1
v 1 1 1
v -1 1 1
v -1 -1 1

vt 0 1
vt 1 0
vt 1 1
vt 0 0

vn 0 0 -1
vn 1 0 0
vn 0 1 0
vn -1 0 0
vn 0 -1 0
vn 0 0 1

f 1/1/1 2/2/1 3/3/1
f 2/2/1 1/1/1 4/4/1
f 1/2/2 5/1/2 4/4/2
f 5/1/2 1/2/2 6/3/2
f 1/4/3 7/3/3 6/1/3
f 7/3/3 1/4/3 3/2/3
f 2/2/4 7/1/4 3/4/4
f 7/1/4 2/2/4 8/3/4
f 2/4/5 5/3/5 8/1/5
f 5/3/5 2/4/5 4/2/5
f 5/2/6 7/1/6 8/4/6
f 7/1/6 5/2/6 6/3/6

